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CHF101/CHW-S16
Flux/Wire Combination for Submerged Arc Welding |
AWS A5.23 F8A2-EA2-A2
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Description:
CHF101/CHW-S16
flux/wire
combination has excellence welding performance. The weld metal shows a fine
appearance and the deposited metal has a satisfactory low temperature
toughness and high crack resistance. Both AC and DC can be applied, when DC,
the wire should be contacted straight polarity. It is used to weld
550-700MPa important high strength steel structures, especially for spiral
or longitudinal welded huge diameter pipe made by X65, X70 & X80 steels. It
could be four wires welding at same time and the welding speed is
1.70m-2.00m per minute. Before welding, the base metal must clear away
impurities and the flux must be baked in a temperature of 300℃-350℃
for 1-2 hours.
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Chemical Composition (%)
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C |
Mn |
Si |
S |
P |
Mo |
Cu |
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Wire CHW-S16
(AWS A5.23 EA2) |
Standad |
0.05-0.17 |
1.2-1.7 |
≤0.20 |
≤0.025 |
≤0.025 |
0.45-0.65 |
0.35 |
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Typical |
0.07 |
1.20 |
0.15 |
0.010 |
0.011 |
0.53 |
0.10 |
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Deposited Metal |
Typical |
0.06 |
1.15 |
0.40 |
0.006 |
0.016 |
0.42 |
0.08 |
Mechanical Properties of Deposited Metal
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Yield Point
ReL
(MPa) |
Tensile Strength
Rm (MPa) |
Elongation
A (%) |
Impact Value (J) |
|
-30℃ |
-40℃ |
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Standard |
≥470 |
550-700 |
≥20 |
≥27 |
__ |
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Typical |
510 |
610 |
26 |
80 |
50 |
Mechanical Properties of Deposited Metal of
Welded Joint
(Base metal is X70 plate,
Typical)
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Tensile Strength
Rm (MPa) |
Impact Value (J) |
Cut Acreage |
Hardness (Hv) |
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-20℃ |
(SA, %) |
Weld Metal |
HAZ |
|
650 |
150 |
80 |
240 |
230 |
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